JournalsemVol. 63, No. 3Elemente der MathematikVolume 63, Number 3, 2008DOI: 10.4171/em | ISSN: 0013-6018 | eISSN: 1420-8962Euclid, Calkin & Wilf — Playing with rationalsJörn SteudingStefanie HofmannGertraud Schusterpp. 109–117The diameter of the circumcircle of a Heron triangleRonald van Luijkpp. 118–121Mean value theorems for differencesJ. Marshall Ashpp. 122–125On the Miquel point of simplicesLothar Heinrichpp. 126–136Crossed ladders and power meansDag LukkassenRalph Høibakkpp. 137–140Flächen mit lauter NabelpunktenArno Paulypp. 141–144Aufgabenpp. 145–149Rezensionenpp. 150–152
Euclid, Calkin & Wilf — Playing with rationalsJörn SteudingStefanie HofmannGertraud Schusterpp. 109–117
